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Online since: June 2016
Authors: Jens P. Wulfsberg, Tobias Meyer, Andreas Argubi-Wollesen, Robert Weidner
The EMG-data was afterwards processed and normalized using a standardized procedure in biomechanical analyses [14].
Comparing the EMG-data for both tasks with the MVC, only during the second task (outstretched arm), a noticeable reduction in muscle innervation occurred for the M. deltoideus (15.68 ± 0.64 [% MVC] with support, 27.08 ± 2.05 [% MVC] without support).
During the first task, no reduction occurred for the M. biceps brachii (9.10 ± 0.26 [% MVC] with support, 7.43 ± 0.84 [% MVC] without support).
The reasons for the differences in reduction while wearing the support system might be influenced by a) the different placement of the two support systems in conjunction to the joints and b) differences in grasping the object with a bend or outstretched arm, which could have had influences on the innervation of the biceps.
Online since: October 2013
Authors: Ying Li, Xiao Lun Zhang, Shu Gan, Ji Lei Huang, Shuai Gao
Fig.1 Study area Fig.2 Typical land types spectral curve Materials and methods Data collection Because the study area is too larger, the data collecting of typical land use in study area are mainly concentrated in Guangnan Country and Qiubei Country (Fig. 1).
When collecting field data, recorded the sampling sites location, described the land use status of each site and its surroundings.
Processing the spectral data Vegetation index is a simple and effective measure parameters used to characterize the surface vegetation cover and growth conditions in the field of remote sensing
Analysis of spectral data Tasseled Cap transformation.
Compared with the spectral characteristics of original image data, spectral of the six kinds of typical land types, which distinguish focused on bands TM3, TM4, TM5 and TM7, but there are no significant differences.
Online since: April 2022
Authors: Adebayo T. Ogundipe, Omolola O. Yusuf, Olamilekan R. Oloyede, Omolayo M. Ikumapayi, Sunday Adeniran Afolalu
The data for the 100% LDPE sample are given in Table 2, followed by those of other blends.
Table 2 Compression data for Control Sample Sample composition Starch/LDPE Maximum compressive stress Load at maximum compressive stress (% wt) (MPa) (N)       0/100 0.2095 9.6481       From Table 3, the 15/85 wt.
Table 4 Compression data for Palm Oil-plasticized BaP/LDPE blends Sample composition Starch/LDPE Maximum compressive stress Load at maximum compressive stress (% wt) (MPa) (N) 5/ 95 0.00518 0.29533 10/90 0.02033 1.15789 15/85 0.03548 2.02246 20/80 0.05581 2.9988 Tensile Analysis.
The data for the 100% LDPE sample are given in Table 5, followed by those of the blends.
During the second and third week, the percentage weight reduction was at its highest.
Online since: September 2008
Authors: W.Joe Quadakkers, Gerald H. Meier, Lorenz Singheiser, J. Zurek, D. Naumenko, L. Niewolak, P. Huczkowski
These data are then extrapolated to actual service conditions using various oxidation models described in textbooks and n, specimen aumerous publications.
This is confirmed by the thermogravimetric results in Fig. 2, showing data of duplicate tests for specimens of different thickness during 40 and 90 hours oxidation respectively.
Fig. 5 shows the mass change data for the high-Cr ferritic steel Crofer 22 APU during cyclic oxidation at 900°C for specimens of different thickness.
Fig. 7 presents weight change data during isothermal oxidation of the Ni-base model alloys NiCr and NiCrMn in synthetic air at 1000°C.
Using the experimental oxidation data for the Ni-base alloys, a first estimate of the reduction caused by the effect of an assumed compressive stress [18-20] on the Cr diffusivity was carried out by calculating the value of the exponential in Equation 1 using assumptions and data in references [15, 16].
Online since: March 2018
Authors: Fareg S. Ali, Mohd Rashdan Isa, Omar Suliman Zaroog
Relationship between Compressive Residual Stress Relaxation and Microhardness Reduction after Cyclic Loads on Shotpeened ASTM A516 Grade 70 Steel Mohd Rashdan Isa1,a, Omar Suliman Zaroog1,b and Fareg S Ali1,c 1Department of Mechanical Engineering, College of Engineering, University Tenaga Nasional, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, Malaysia amrashdan@uniten.edu.my, bomars@uniten.edu.my, cfaragpodina@yahoo.com Keywords: shot peening, residual stress, relaxation, micro-hardness, shot peening coverage.
Table 3 shows the data collected for XRD measurement for samples that undergone cyclic loads.
Online since: July 2018
Authors: A.A. Lasukov, Vladimir P. Nesterenko, O.Yu. Retyunskiy
The ion meter was connected to a computer and the electromotive force data continuously recorded in the cell was shown on the display.
On the basis of the obtained data showing cutting inserts wear resistance and values of acidity of the oxide substance formed on their contact surfaces when heating we obtained a dependence: wear resistance of the cutting inserts –degree of the surface oxide substance acidity.
However, the stoichiometry reduction process can be different.
The carbon monoxide formed during oxidation of the composite can participate in the reduction processes along with the hydrogen impurity present in the carbide structure.
A reduction in the strength of chemical bond between oxygen and hydrogen in the adsorbed oxide films of hydroxyl groups and a growth in the strength of the bond between the metallic cation of the oxide surface and oxygen promotes an increase in the density and strength of the surface oxide structure.
Online since: January 2017
Authors: W.Y.H. Liew, Sujan Debnath, Omid Nabinejad, Teh J. Ying, Ian J. Davies
As a result of the surface treatment, impurities, wax, oil, hemicelluloses and lignin may be removed from natural fibres which results in a rougher surface and reduction in size.
Consequently, it can reduces the quantity of water molecule clusters due to a reduction in the number of microcavities {Razera, 2004 #625}[11].
Similar to the strength data, the maximum tensile and flexural moduli were both achieved for the case of 5% alkali concentration.
The influence of nanoclay addition on the tensile and flexural moduli of RHP-UP composites was found to follow a similar trend to that of the strength data with Fig. 7 both indicating the optimum amount of nanoclay to be 1 wt%.
However, all of the alkali treated rice husk particle composites and nanoclay composites showed a significant reduction in water absorption when compared to the untreated rice husk particle composites (and without nanoclay) with the 5% alkali treated rice husk particle composites showed the least moisture uptake when compared to other concentrations (3%, 7%).
Online since: January 2012
Authors: Gui Feng Zhao, Yu Hong Ma, Rui Hai Chen
Introduction In recent years, it is proved that the isolation technology can effectively improve seismic capacity of the buildings and obtain the good effect of vibration reduction, so the technology has been widely recognized by expects and ordinary people.
In addition, isolation construction measure is also a key to ensure the isolated structure safety, which may affect the effects of vibration reduction.
Therefore, it is necessary to gradually summarize the factual earthquake damage reports, extensive analysis data and real testing data, or to ask the authority experts for their advices, so as to improve the membership function and the weight coefficient value.
The presented method of definition damage grade of the isolated structure according to the performances of the isolated layer and the upper structure can adequately consider testing performance and theory performance of isolated rubber bearing, the actual situation of damage of the isolated structure concentrating in the isolated layer and good vibration-reduction effect of the upper structure, so the method is more rational. 3.
Online since: August 2002
Authors: Jean R. Gavarri, Jean Musso, C. Leroux, Agnes Kopia, J. Kusinski, Sylvie Villain, Magdalena Klimczak
Ceria has also been currently used as an active component in the so-called three-way catalyst (oxidation of CO, oxidation of CnHm, reduction of (NO)x), for automotive exhaust [4,5].
In addition, ceria based catalysts were investigated for catalytic red-ox reactions, such as catalytic oxidation of CO and methane [7] or catalytic reduction of sulfur dioxide by carbon monoxide [6- 8].
The resulting size values are similar to the values obtained from X-ray diffraction data.
This is not the case for BM samples which have been subjected to a certain reduction during the preparation process.
In the case of powder samples, the impedance spectroscopy analyses might provide interesting data on the oxygen deficiency of the as prepared samples.
Online since: July 2022
Authors: Janusz Majta, Krzysztof Muszka, Marcin Kwiecień, Maciej Rumiński, Jakub Kawałko
They observed that for each reduction stage a higher reduction could be selected when using roller dies.
During the measurements, the tensile stage was placed in the chamber of an FEI Versa 3D FEG scanning electron microscope equipped with the EBSD data acquisition system.
During the test, force versus extension data were recorded and then recalculated into stress – strain curves using standard equations.
Bouchard, Comparison of reduction ability between multi-stage cold drawing and rolling of stainless steel wire – Experimental and numerical investigations of damage, J.
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